EP2247815A2 - Vertikalrichtungseinstellwerkzeug für bohrloch-bohrvorrichtung - Google Patents
Vertikalrichtungseinstellwerkzeug für bohrloch-bohrvorrichtungInfo
- Publication number
- EP2247815A2 EP2247815A2 EP08762581A EP08762581A EP2247815A2 EP 2247815 A2 EP2247815 A2 EP 2247815A2 EP 08762581 A EP08762581 A EP 08762581A EP 08762581 A EP08762581 A EP 08762581A EP 2247815 A2 EP2247815 A2 EP 2247815A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- tool according
- piston
- pressure chamber
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/067—Deflecting the direction of boreholes with means for locking sections of a pipe or of a guide for a shaft in angular relation, e.g. adjustable bent sub
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/10—Correction of deflected boreholes
Definitions
- each of the pistons 60 has a head 60a defining slightly less than 120 degrees of circular arc and is slidably mounted by means of a respective 0-ring 62 or more preferably an elastomer seal with an external profile which is more resistant to the seal rolling in its groove when the piston travels axially, in a respective piston chamber 64 of a cylindrical piston chamber block/flow restrictor/radial bearing 66 shown in greater detail in Figures 8A and 8B and located between the housing 8 and the drive shaft 16.
- seal pads 74 are mounted to the housing 8 by means of screws 76, 78 such that each seal pad 74 and O- rings 80 define a respective oil-filled second pressure chamber 72 between the seal pad 74 and the pusher pistons 12, as shown more clearly in Figure 6. Additional screws could also be added which are not shown to the centre of the seal pad to enhance the ability of the gasket seal around the periphery of the seal pad to seal properly in all instances of internal and external pressures applied to the oil-filled second chamber.
- the longitudinal axis of the housing 8 of the tool 2 is aligned a small angle clockwise as shown in Figure 2 of the vertical direction, as the pendulum member 54 aligns itself in a generally vertical direction, the longitudinal axis of the pendulum member 54 will be arranged at a small angle (0.45 deg or so is possible) anticlockwise of the longitudinal axis of the housing 8.
- the pressure increase is communicated via apertures 30 to the first pressure chamber 32, as a result of which the flow restrictor member 34 and pendulum member 54 are urged to the left 2 against the action of compression spring 38, and the pistons 60 are urged to the right.
- the lower part of the pendulum member 354 is provided with a larger number of serrations 356 than the corresponding components of the embodiment of Figures 1 to 8, and the compensating pistons 360 are provided with corresponding serrations 357.
- this component has significantly greater strength than the corresponding component of the embodiment shown in Figures 1 to 8 as a result of the enlarged engagement area.
- the axial force passing through the mutually engaging parts of the pendulum 365 and the pistons 360 is lower because the seal area on the compensating pistons is lower than the seal area on the moving flow restrictor 34 of the embodiment of Figures 1 to 8.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0712451.4A GB0712451D0 (en) | 2007-06-27 | 2007-06-27 | Direction adjustment tool for downhole drilling apparatus |
| PCT/GB2008/050473 WO2009001123A2 (en) | 2007-06-27 | 2008-06-20 | Vertical direction adjustment tool for downhole drilling apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2247815A2 true EP2247815A2 (de) | 2010-11-10 |
| EP2247815B1 EP2247815B1 (de) | 2013-09-25 |
Family
ID=38420790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08762581.0A Active EP2247815B1 (de) | 2007-06-27 | 2008-06-20 | Vertikalrichtungseinstellwerkzeug für bohrloch-bohrvorrichtung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7954561B2 (de) |
| EP (1) | EP2247815B1 (de) |
| CN (1) | CN101802343B (de) |
| CA (1) | CA2693023C (de) |
| GB (2) | GB0712451D0 (de) |
| WO (1) | WO2009001123A2 (de) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9415496B2 (en) | 2013-11-13 | 2016-08-16 | Varel International Ind., L.P. | Double wall flow tube for percussion tool |
| US9328558B2 (en) | 2013-11-13 | 2016-05-03 | Varel International Ind., L.P. | Coating of the piston for a rotating percussion system in downhole drilling |
| US9562392B2 (en) | 2013-11-13 | 2017-02-07 | Varel International Ind., L.P. | Field removable choke for mounting in the piston of a rotary percussion tool |
| US9404342B2 (en) | 2013-11-13 | 2016-08-02 | Varel International Ind., L.P. | Top mounted choke for percussion tool |
| US9932098B1 (en) * | 2015-09-02 | 2018-04-03 | Brunswick Corporation | Systems and methods for continuously adapting a toe angle between marine propulsion devices |
| CN107178329A (zh) * | 2017-07-18 | 2017-09-19 | 中国海洋石油总公司 | 油气井井下工具的方向调节装置 |
| CN108005580B (zh) * | 2017-12-29 | 2023-10-20 | 中国地质大学（北京） | 一种在垂直姿态下零造斜的静态机械式自动垂直钻具 |
| CN109917465B (zh) * | 2018-11-30 | 2024-04-12 | 河南省地质物探测绘技术有限公司 | 一种磁力仪探头架 |
| CN112627728B (zh) * | 2020-12-03 | 2023-03-24 | 中国地质科学院勘探技术研究所 | 一种可在井下调整定向钻具工具面角的钻具 |
| CN119641235A (zh) * | 2023-09-15 | 2025-03-18 | 中国石油天然气集团有限公司 | 井下闭环防斜工具 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3243001A (en) * | 1963-12-17 | 1966-03-29 | Pan American Petroleum Corp | Rotary well drilling device |
| US3637032A (en) * | 1970-01-22 | 1972-01-25 | John D Jeter | Directional drilling apparatus |
| CN1004895B (zh) * | 1986-07-04 | 1989-07-26 | Smf国际公司 | 遥控操纵装置 |
| GB9019548D0 (en) * | 1990-09-07 | 1990-10-24 | Anderson Charles A | Inclinometer |
| US7389830B2 (en) * | 2005-04-29 | 2008-06-24 | Aps Technology, Inc. | Rotary steerable motor system for underground drilling |
| CA2541541A1 (en) * | 2006-03-24 | 2007-09-24 | Kenneth H. Wenzel | Apparatus for keeping a down hole drilling tool vertically aligned |
| US7413034B2 (en) * | 2006-04-07 | 2008-08-19 | Halliburton Energy Services, Inc. | Steering tool |
-
2007
- 2007-06-27 GB GBGB0712451.4A patent/GB0712451D0/en not_active Ceased
-
2008
- 2008-06-20 CA CA2693023A patent/CA2693023C/en active Active
- 2008-06-20 WO PCT/GB2008/050473 patent/WO2009001123A2/en not_active Ceased
- 2008-06-20 US US12/666,474 patent/US7954561B2/en active Active
- 2008-06-20 GB GB0921817A patent/GB2462970B/en active Active
- 2008-06-20 CN CN2008801053367A patent/CN101802343B/zh active Active
- 2008-06-20 EP EP08762581.0A patent/EP2247815B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009001123A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101802343A (zh) | 2010-08-11 |
| CA2693023C (en) | 2016-02-02 |
| US20100163311A1 (en) | 2010-07-01 |
| GB0712451D0 (en) | 2007-08-08 |
| GB2462970A (en) | 2010-03-03 |
| GB2462970B (en) | 2011-11-02 |
| EP2247815B1 (de) | 2013-09-25 |
| GB0921817D0 (en) | 2010-01-27 |
| WO2009001123A2 (en) | 2008-12-31 |
| CN101802343B (zh) | 2013-05-29 |
| CA2693023A1 (en) | 2008-12-31 |
| US7954561B2 (en) | 2011-06-07 |
| WO2009001123A3 (en) | 2010-04-01 |
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